若在不等式组所确定的平面区域内任取一点，则点的坐标满足的概率是_____________.
Andrew is clever and hard﹣working.He often works out some problems very e .
In 1961,Yuan Longping found a natural hybrid rice plant that had many a over others.
When watching the raising of the national flag，we should stand with our backs.
A walk in the fresh air can l your mood after a stressful day's work.
Kate wanted to turn the room into a study，w her husband preferred a kitchen.
所确定的平面区域内任取一点
，则点
的坐标满足
的概率是_____________.
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